Leading weak corrections to the production of heavy top quarks at hadron colliders

摘要

We calculate the leading weak corrections at O(m(t)(2)/v(2)) to the QCD production of heavy top quark pairs via --> at hadron colliders and compare them with the complete one-loop weak corrections. We find that these corrections dominate the threshold region for a heavy top quark if the Higgs boson is light. For a heavy Higgs boson, these corrections are generally small. The chromo-anapole form factor of the top quark and effects of parity violation are studied in the Standard Model (SM). The parity violation effect in --> g --> from the SM weak corrections is found to be very small, so any observation of large parity violation in this process would indicate new physics. The polarization of the pairs is also discussed, including the effect that this has on proposed techniques for measuring the top quark mass.